it seems like ANY group tends to develop their own "lingo"...even when it is discouraged.

I remember a restauraunt I worked in, where a management trainee came in one time and managed to p*ss-off most of the kitchen crew. This was a chain resteraunt and he had worked in several, so he SHOULD have known the routine, and actually DID, until we slipped into our "private" language (deliberatly) and lost him in about 30 seconds. We kept it up for several shifts until our manager stopped the fun.

oddly enough - he invited several of the crew to "his" store, a few months later, when he had been assigned - and ASKED us to do the same thing for his crew....as a demonstration....